Electric switch



Oct. 11, 1932f G. H. ELWELI. 1,882,245

ELECTRIC SWITCH Filed 0G11. 10. 1927 `Patented Oct 11, 1.932

UNITEDA STATES PATENT OFFICE 'i GEonc-EHENRY LWELI., or NEW HAVEN, CONNECTICUT, AssreNoItTo Trrneianrs'r MANUFACTURING COMPANY, or NEW IIAvnIN, ooNNnCTrCUT, A ConronATIoN or CONNECTICUT `1 `ELECTRIC'-svvrrcrr Application iled October 10, 1927; Serial `i1\To. "225,195.'

The` .invention Arelates to improvements ,in elec-tric switches and more particularly to that type of an,y electric switch having an oscillat ing operating 'means. The applicant kis aware that the development of the'previous artdisclosesfa swinging or oscillating contact making element having va sliding pivotal mounting upon one end and having a bearing at its oppositeV end adapted to ride upon the peaked cam ofY a reciprocating operating member, the swinging element being heldengaged with the peakedV camby spring means supplying sufficient :tension to .causethe swinging element to snap over the peak of the camV asl the reciprocating member is operated in opposite directions. In an application of even date herewith and led October 10, 1927, Serial NumberA 225,194, the applicant discloses an electric switch element of 'gp' that typ-e withvthe swinging contact making element likewise associated with the peaked cam of thereciprocating member, but unlike thel previous art the swing Contact making ele- Vment is pivotally mounted upon and carried i "25. by the reciprocating operating means. Y The present invention,n while still associating'the swinging Contact .making clement with a peaked cam and pivotally mounting that element uponthe member providing-the peaked 3 0 cam, provides an oscillating operating memloerto carry the swinging contactgelement and 1 therefore the objects of this inventionarejto .provide an electricswitch of simple and economi cal construction; to provide an electric oscillating switch'` of that character capable ofeasyassembly within an electric lamp Isocket; to provide an electric oscillating switch nContact caried by an oscillating operl ating member; and tto provide an electric switch involving such other'features of the inventionas' may herein appear.

Y The following is 'the description of an embodiment of the invention, the construction of which within the scope of vwhat hereinafter is claimed may be varied without departing from the spirit orjmodifyingany of the adyvantagesof the invention. Reference bein-g Vhadto the drawing one sheet) the Figure 1 -is an upright elevation of an electric lamp socket without a casing but being provided Yof Figure 2; vand, Figure ,4 isa perspectivev YView of'detail. v

numbered, theelectric switch while adapted for association with any electrical device both lsides of the opening in the periphery7 W as the 'pivot upon which the switch 7 oscilflates, asy best illustrated by Figure. 2.

Vv ascension under increasing tension up either with-an improved electric switch; Figure 2 is an elevation of the samevsocket illustrating an interiorand the improved switch inopen circuit position; Figure 3 is a cross-section view of the same socket at thelline A4- Referring more particularly tothe drawing, in which similar parts arev similarly Wah which a switch may .be desired is nlustrated in the drawing inconnection with Y an electrical lamp socket in which the supporting base, comprising thebody of insula- 'Q5 Vtion 1,1 is provided withva center cavity. 2,7as

best illustrated by Figure 3, communicating with a narrower but deeper cavity 3 leX- i tendingtherefrom radially to.l Aand opening up, the cylindrical periphery of the body 1 76 and into the inclined portion g4 of the floor` Vof the center f cavity 2. Fixedly provided `within the center cavity 2 are the center-lamp "lies, fas -best illustrated by Figure 2. The foscillatingswitch 7 is providedatv one end `withfapeaked cam 8 and at v-itsopposite end with an'operating handle 9. Located 1n- -termediate the cam 8 andthe handle 9 are lateral projections `10, each adapted to'` bef come lodgedwithin notches 11 located upon ofthe body-1 so that when the insulation lining (not illustrated) is placed yover the notches 11` thelateral proiectionsl() will be locked thereby against dislodgment to serve Mounted upon and carried by the peaked portion 8 is the swinging eIqoansible-against-` tension ,spring device 12 adapted for a forced incline ofthe .peaked kcam 8jand for anauto-v matic instantaneous descent down the op- Y posite incline upon the passing of the peak and release ofthe spring tension, as best .illustrated by Figure 2. The spring` device` 10c v 12 is preferablymade from asingle piece of spring wire shaped to be pivotally mounted upon the oscillating switch member 7 at a particular point or within an elongated bearf .5 ing to provide a laterally shifting pivotal movement thereof if desired,.the wirelendsl beingJ inserted into the the bearingand bent to secure the same therein and tores-tendtherefrom -as arms along vbothA sidey surfaces portion 141 of the wire connecting the coils lying acrossthecam surface Aoffthe carni 8. lIi,-in''t-l1e making 'of' the'spring y'deviceit is deemed expedientIto/employ such `a light weight' of" wire that kkthe portion 14 is like'- lyvto bendingly? yieldat the place of cross- -ing instead of tensioningl the coils, a? tubular Y metal covering may be usedfftereinforceithe wire `at thisplaoe andl also to serve as a roller bearing (not illustrated) fof the spring device vwhen riding on the peaked camr8. From f the' v`foregoing vit will be obvious that upon the oscillating movementof the switchf element 'v7 the Yspringdevice 12, lying @upon a low portion' of'onef'of the inclined surfaces 23,0 `of the' peaked cam 8 and against one of the vconvergerrt fabutmentaj presented by the "spaced abutinents of the floor portion 4- as illustrated by the Figure /2f'or the spaced of thecoil-s13,thespringidevice 12-is swingingly precipitateddown the other incline of convergent abutments, as 'at 5z`ande6 one of which is Vconceal-ed by the other as 'illustrated diy/"Figure` 2, the contacts being thereby bridged, the spring switch 12 closes the elec- `trical circuit 'oit the @electric lamp socket.

the Patent Number.1,762,512granted tothe applicant June 10,l193 0, thescrewshell 18 having integral arms'19 and 120,7 best illuseither seti-screw, 'as for instance the set-screw 21,*may be used'ffor aline contactfr-omwhich the .electrical circuit' may be tracedl throughV thearni.21,the screwshell18a lamp screwofthe metal of the peakedportion- 8 to the nearest .part of the "cama surface of the peaked cam S'where each is made to assume.. Y the form of coils 13, the convolutions of'which extend laterally in oppositedirections,; ,theA` conta-cts and V6', one 'o-lVV which contacts is l the peaked cam f8 to fand: against the other Y The screw-shell 18 is of-the'ty-pe disclosed in i base (not illustrated), a 'lamp center contact- (notillustrated) a socket center Contact v23,

Vthe fixed contacts 5A and 6 bridged by the vis'illus-trated in the drawing as having an oscillating movement withinfthe-lamp socket in la V-lonfgitudinalV directionythe -\,switch s as Vwell adapted for lsuch ya movement .f in-fany I i predetermined direction so long as the associat'ed/ construction of parts is in a relative way substantially-similar as that hereinldel scribed.: When itis desiredthat this im.- SQ proved electric sWitchS-bensedirl/connection "withanr.electriclamp socket assembled withf in' afunitaryycasing thefhandle being made Vlof insulation material maybe provided with *an attaching means-adapted to beiconnected r with the switch element by insertingthe handle 'radially through a proper opening provided by boththe fcasinga-nd the lining i (not illustrated.)therefor. For this purpose the Vhandle) may be provided with abitur;-

`cated spring clip 15 atiits `innerend :and "adaptedto be sprung intoI the `'grooves' 16 .with whichtheextremity:of the member 7 is-.pro-

vided vupon either side thereof.I each. section- -o the cli-p15 having at its-extremity aV slight- "125 1y. off-set. portionflradapted to"'form' a shoulder for engagement viunder a vshouldered end of its groove 16g-.1.v i

WhatI claim is:

An electa@- S'wach empfang 'a ste-:11x00 porting base havingl acenter'cavity .pro- Vvidingv an oblique abutment, tiXed contacts mounted within the cavity opposite the :abut- Y ment Zand f positioned* relatively convergent thereto, 'a passage .with which the base is pro- 3205 vided coinmunicatingwith the center cavity andextending'throiighthe abutment and bei i tweenthe contacts, van oscillating operating yrnember-inounted' within tliepa'issage and loe-V Yingproviided with a peaked switch-th'rowing-@J0v cam-,rand aswingingfir ISpring'switch member carriedbyfthe operatingmember and having apart adapted to ride upon. the peaked'cam within the cavity. upon 'the movement ofthe operatingmember in eitherdirection and lal-'-w ternate arresting engagement of the switch "m'emberwith the abutment and the contacts to tensionthe switch' member for Va throwing movement upon passing i the `peak'.v

1 "2. An electric switch comprising a" Asupr- QJ-20 porting base ofinsulation' having a cavity;

.-tixedspaced contacts withinthe cavity; an oscillatory operating member?v having a ktrated by the Figure 1,' the ar'ms19jancl20, beingfse'curedto the insulationbody lloy the set-screws 21and22, respectively, `of which vided by uw bastante by the Spaedojntaas; 7

andan oscillatory spring s wit'c'harriedby 1 theY operating member and having" a part adapted to ride upon the peakedcamuponthejjuo base; converging abutments provided by the p base and by the spaced contacts; and an ,oscillatory spring switch mounted between the abutments and having a part adapted to ride upon the peaked cam upon the movel ment of the operating element in eitherdirection and being alternately arrested by either of the abutments to tension the spring switch for a -throwing movementto the other abutment upon passing the peak.

4. An electric switch comprising a supporting base of insulation having a cavity providing a pair of spaced abutments; fixed spaced contacts within the cavity and providing a pair of abutments relatively. convergent to the insulation base abutments; an oscillatory operating switch element mounted upon the supporting base and having y a peaked switch-throwing cam movable within the cavity and between both pairs of abutments; and a spring switch carried by the operating switch element, the spring switch having a part adapted to Vride upon the peaked cam upon the movement of the operating switch element in either direction and the alternate arresting engagement of the spring switch part with a pair of abutments to tension the spring switch for a throwing movement against the other pair of abutments upon the passing of the peak by the spring switch part to alternately bridge the contacts to close the circuit.

eEoEeE HENRY ELwELL. 

